dlls/ntdll/sync.c

   1 /*
   2  *      Process synchronisation
   3  *
   4  * Copyright 1996, 1997, 1998 Marcus Meissner
   5  * Copyright 1997, 1999 Alexandre Julliard
   6  * Copyright 1999, 2000 Juergen Schmied
   7  * Copyright 2003 Eric Pouech
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #include "config.h"
  25
  26 #include <assert.h>
  27 #include <errno.h>
  28 #include <signal.h>
  29 #ifdef HAVE_SYS_TIME_H
  30 # include <sys/time.h>
  31 #endif
  32 #ifdef HAVE_POLL_H
  33 #include <poll.h>
  34 #endif
  35 #ifdef HAVE_SYS_POLL_H
  36 # include <sys/poll.h>
  37 #endif
  38 #ifdef HAVE_UNISTD_H
  39 # include <unistd.h>
  40 #endif
  41 #ifdef HAVE_SCHED_H
  42 # include <sched.h>
  43 #endif
  44 #include <string.h>
  45 #include <stdarg.h>
  46 #include <stdio.h>
  47 #include <stdlib.h>
  48 #include <time.h>
  49
  50 #define NONAMELESSUNION
  51 #define NONAMELESSSTRUCT
  52
  53 #include "ntstatus.h"
  54 #define WIN32_NO_STATUS
  55 #include "windef.h"
  56 #include "winternl.h"
  57 #include "wine/server.h"
  58 #include "wine/debug.h"
  59 #include "ntdll_misc.h"
  60
  61 WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
  62
  63 /* creates a struct security_descriptor and contained information in one contiguous piece of memory */
  64 NTSTATUS NTDLL_create_struct_sd(PSECURITY_DESCRIPTOR nt_sd, struct security_descriptor **server_sd,
  65                                 data_size_t *server_sd_len)
  66 {
  67     unsigned int len;
  68     PSID owner, group;
  69     ACL *dacl, *sacl;
  70     BOOLEAN owner_present, group_present, dacl_present, sacl_present;
  71     BOOLEAN defaulted;
  72     NTSTATUS status;
  73     unsigned char *ptr;
  74
  75     if (!nt_sd)
  76     {
  77         *server_sd = NULL;
  78         *server_sd_len = 0;
  79         return STATUS_SUCCESS;
  80     }
  81
  82     len = sizeof(struct security_descriptor);
  83
  84     status = RtlGetOwnerSecurityDescriptor(nt_sd, &owner, &owner_present);
  85     if (status != STATUS_SUCCESS) return status;
  86     status = RtlGetGroupSecurityDescriptor(nt_sd, &group, &group_present);
  87     if (status != STATUS_SUCCESS) return status;
  88     status = RtlGetSaclSecurityDescriptor(nt_sd, &sacl_present, &sacl, &defaulted);
  89     if (status != STATUS_SUCCESS) return status;
  90     status = RtlGetDaclSecurityDescriptor(nt_sd, &dacl_present, &dacl, &defaulted);
  91     if (status != STATUS_SUCCESS) return status;
  92
  93     if (owner_present)
  94         len += RtlLengthSid(owner);
  95     if (group_present)
  96         len += RtlLengthSid(group);
  97     if (sacl_present && sacl)
  98         len += sacl->AclSize;
  99     if (dacl_present && dacl)
 100         len += dacl->AclSize;
 101
 102     /* fix alignment for the Unicode name that follows the structure */
 103     len = (len + sizeof(WCHAR) - 1) & ~(sizeof(WCHAR) - 1);
 104     *server_sd = RtlAllocateHeap(GetProcessHeap(), 0, len);
 105     if (!*server_sd) return STATUS_NO_MEMORY;
 106
 107     (*server_sd)->control = ((SECURITY_DESCRIPTOR *)nt_sd)->Control & ~SE_SELF_RELATIVE;
 108     (*server_sd)->owner_len = owner_present ? RtlLengthSid(owner) : 0;
 109     (*server_sd)->group_len = group_present ? RtlLengthSid(group) : 0;
 110     (*server_sd)->sacl_len = (sacl_present && sacl) ? sacl->AclSize : 0;
 111     (*server_sd)->dacl_len = (dacl_present && dacl) ? dacl->AclSize : 0;
 112
 113     ptr = (unsigned char *)(*server_sd + 1);
 114     memcpy(ptr, owner, (*server_sd)->owner_len);
 115     ptr += (*server_sd)->owner_len;
 116     memcpy(ptr, group, (*server_sd)->group_len);
 117     ptr += (*server_sd)->group_len;
 118     memcpy(ptr, sacl, (*server_sd)->sacl_len);
 119     ptr += (*server_sd)->sacl_len;
 120     memcpy(ptr, dacl, (*server_sd)->dacl_len);
 121
 122     *server_sd_len = len;
 123
 124     return STATUS_SUCCESS;
 125 }
 126
 127 /* frees a struct security_descriptor allocated by NTDLL_create_struct_sd */
 128 void NTDLL_free_struct_sd(struct security_descriptor *server_sd)
 129 {
 130     RtlFreeHeap(GetProcessHeap(), 0, server_sd);
 131 }
 132
 133 /*
 134  *      Semaphores
 135  */
 136
 137 /******************************************************************************
 138  *  NtCreateSemaphore (NTDLL.@)
 139  */
 140 NTSTATUS WINAPI NtCreateSemaphore( OUT PHANDLE SemaphoreHandle,
 141                                    IN ACCESS_MASK access,
 142                                    IN const OBJECT_ATTRIBUTES *attr OPTIONAL,
 143                                    IN LONG InitialCount,
 144                                    IN LONG MaximumCount )
 145 {
 146     DWORD len = attr && attr->ObjectName ? attr->ObjectName->Length : 0;
 147     NTSTATUS ret;
 148     struct object_attributes objattr;
 149     struct security_descriptor *sd = NULL;
 150
 151     if (MaximumCount <= 0 || InitialCount < 0 || InitialCount > MaximumCount)
 152         return STATUS_INVALID_PARAMETER;
 153     if (len >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
 154
 155     objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
 156     objattr.sd_len = 0;
 157     objattr.name_len = len;
 158     if (attr)
 159     {
 160         ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
 161         if (ret != STATUS_SUCCESS) return ret;
 162     }
 163
 164     SERVER_START_REQ( create_semaphore )
 165     {
 166         req->access  = access;
 167         req->attributes = (attr) ? attr->Attributes : 0;
 168         req->initial = InitialCount;
 169         req->max     = MaximumCount;
 170         wine_server_add_data( req, &objattr, sizeof(objattr) );
 171         if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
 172         if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
 173         ret = wine_server_call( req );
 174         *SemaphoreHandle = wine_server_ptr_handle( reply->handle );
 175     }
 176     SERVER_END_REQ;
 177
 178     NTDLL_free_struct_sd( sd );
 179
 180     return ret;
 181 }
 182
 183 /******************************************************************************
 184  *  NtOpenSemaphore (NTDLL.@)
 185  */
 186 NTSTATUS WINAPI NtOpenSemaphore( OUT PHANDLE SemaphoreHandle,
 187                                  IN ACCESS_MASK access,
 188                                  IN const OBJECT_ATTRIBUTES *attr )
 189 {
 190     DWORD len = attr && attr->ObjectName ? attr->ObjectName->Length : 0;
 191     NTSTATUS ret;
 192
 193     if (len >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
 194
 195     SERVER_START_REQ( open_semaphore )
 196     {
 197         req->access  = access;
 198         req->attributes = (attr) ? attr->Attributes : 0;
 199         req->rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
 200         if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
 201         ret = wine_server_call( req );
 202         *SemaphoreHandle = wine_server_ptr_handle( reply->handle );
 203     }
 204     SERVER_END_REQ;
 205     return ret;
 206 }
 207
 208 /******************************************************************************
 209  *  NtQuerySemaphore (NTDLL.@)
 210  */
 211 NTSTATUS WINAPI NtQuerySemaphore(
 212         HANDLE SemaphoreHandle,
 213         SEMAPHORE_INFORMATION_CLASS SemaphoreInformationClass,
 214         PVOID SemaphoreInformation,
 215         ULONG Length,
 216         PULONG ReturnLength)
 217 {
 218         FIXME("(%p,%d,%p,0x%08x,%p) stub!\n",
 219         SemaphoreHandle, SemaphoreInformationClass, SemaphoreInformation, Length, ReturnLength);
 220         return STATUS_SUCCESS;
 221 }
 222
 223 /******************************************************************************
 224  *  NtReleaseSemaphore (NTDLL.@)
 225  */
 226 NTSTATUS WINAPI NtReleaseSemaphore( HANDLE handle, ULONG count, PULONG previous )
 227 {
 228     NTSTATUS ret;
 229     SERVER_START_REQ( release_semaphore )
 230     {
 231         req->handle = wine_server_obj_handle( handle );
 232         req->count  = count;
 233         if (!(ret = wine_server_call( req )))
 234         {
 235             if (previous) *previous = reply->prev_count;
 236         }
 237     }
 238     SERVER_END_REQ;
 239     return ret;
 240 }
 241
 242 /*
 243  *      Events
 244  */
 245
 246 /**************************************************************************
 247  * NtCreateEvent (NTDLL.@)
 248  * ZwCreateEvent (NTDLL.@)
 249  */
 250 NTSTATUS WINAPI NtCreateEvent(
 251         OUT PHANDLE EventHandle,
 252         IN ACCESS_MASK DesiredAccess,
 253         IN const OBJECT_ATTRIBUTES *attr,
 254         IN BOOLEAN ManualReset,
 255         IN BOOLEAN InitialState)
 256 {
 257     DWORD len = attr && attr->ObjectName ? attr->ObjectName->Length : 0;
 258     NTSTATUS ret;
 259     struct security_descriptor *sd = NULL;
 260     struct object_attributes objattr;
 261
 262     if (len >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
 263
 264     objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
 265     objattr.sd_len = 0;
 266     objattr.name_len = len;
 267     if (attr)
 268     {
 269         ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
 270         if (ret != STATUS_SUCCESS) return ret;
 271     }
 272
 273     SERVER_START_REQ( create_event )
 274     {
 275         req->access = DesiredAccess;
 276         req->attributes = (attr) ? attr->Attributes : 0;
 277         req->manual_reset = ManualReset;
 278         req->initial_state = InitialState;
 279         wine_server_add_data( req, &objattr, sizeof(objattr) );
 280         if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
 281         if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
 282         ret = wine_server_call( req );
 283         *EventHandle = wine_server_ptr_handle( reply->handle );
 284     }
 285     SERVER_END_REQ;
 286
 287     NTDLL_free_struct_sd( sd );
 288
 289     return ret;
 290 }
 291
 292 /******************************************************************************
 293  *  NtOpenEvent (NTDLL.@)
 294  *  ZwOpenEvent (NTDLL.@)
 295  */
 296 NTSTATUS WINAPI NtOpenEvent(
 297         OUT PHANDLE EventHandle,
 298         IN ACCESS_MASK DesiredAccess,
 299         IN const OBJECT_ATTRIBUTES *attr )
 300 {
 301     DWORD len = attr && attr->ObjectName ? attr->ObjectName->Length : 0;
 302     NTSTATUS ret;
 303
 304     if (len >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
 305
 306     SERVER_START_REQ( open_event )
 307     {
 308         req->access  = DesiredAccess;
 309         req->attributes = (attr) ? attr->Attributes : 0;
 310         req->rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
 311         if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
 312         ret = wine_server_call( req );
 313         *EventHandle = wine_server_ptr_handle( reply->handle );
 314     }
 315     SERVER_END_REQ;
 316     return ret;
 317 }
 318
 319
 320 /******************************************************************************
 321  *  NtSetEvent (NTDLL.@)
 322  *  ZwSetEvent (NTDLL.@)
 323  */
 324 NTSTATUS WINAPI NtSetEvent( HANDLE handle, PULONG NumberOfThreadsReleased )
 325 {
 326     NTSTATUS ret;
 327
 328     /* FIXME: set NumberOfThreadsReleased */
 329
 330     SERVER_START_REQ( event_op )
 331     {
 332         req->handle = wine_server_obj_handle( handle );
 333         req->op     = SET_EVENT;
 334         ret = wine_server_call( req );
 335     }
 336     SERVER_END_REQ;
 337     return ret;
 338 }
 339
 340 /******************************************************************************
 341  *  NtResetEvent (NTDLL.@)
 342  */
 343 NTSTATUS WINAPI NtResetEvent( HANDLE handle, PULONG NumberOfThreadsReleased )
 344 {
 345     NTSTATUS ret;
 346
 347     /* resetting an event can't release any thread... */
 348     if (NumberOfThreadsReleased) *NumberOfThreadsReleased = 0;
 349
 350     SERVER_START_REQ( event_op )
 351     {
 352         req->handle = wine_server_obj_handle( handle );
 353         req->op     = RESET_EVENT;
 354         ret = wine_server_call( req );
 355     }
 356     SERVER_END_REQ;
 357     return ret;
 358 }
 359
 360 /******************************************************************************
 361  *  NtClearEvent (NTDLL.@)
 362  *
 363  * FIXME
 364  *   same as NtResetEvent ???
 365  */
 366 NTSTATUS WINAPI NtClearEvent ( HANDLE handle )
 367 {
 368     return NtResetEvent( handle, NULL );
 369 }
 370
 371 /******************************************************************************
 372  *  NtPulseEvent (NTDLL.@)
 373  *
 374  * FIXME
 375  *   PulseCount
 376  */
 377 NTSTATUS WINAPI NtPulseEvent( HANDLE handle, PULONG PulseCount )
 378 {
 379     NTSTATUS ret;
 380
 381     if (PulseCount)
 382       FIXME("(%p,%d)\n", handle, *PulseCount);
 383
 384     SERVER_START_REQ( event_op )
 385     {
 386         req->handle = wine_server_obj_handle( handle );
 387         req->op     = PULSE_EVENT;
 388         ret = wine_server_call( req );
 389     }
 390     SERVER_END_REQ;
 391     return ret;
 392 }
 393
 394 /******************************************************************************
 395  *  NtQueryEvent (NTDLL.@)
 396  */
 397 NTSTATUS WINAPI NtQueryEvent (
 398         IN  HANDLE EventHandle,
 399         IN  EVENT_INFORMATION_CLASS EventInformationClass,
 400         OUT PVOID EventInformation,
 401         IN  ULONG EventInformationLength,
 402         OUT PULONG  ReturnLength)
 403 {
 404         FIXME("(%p)\n", EventHandle);
 405         return STATUS_SUCCESS;
 406 }
 407
 408 /*
 409  *      Mutants (known as Mutexes in Kernel32)
 410  */
 411
 412 /******************************************************************************
 413  *              NtCreateMutant                          [NTDLL.@]
 414  *              ZwCreateMutant                          [NTDLL.@]
 415  */
 416 NTSTATUS WINAPI NtCreateMutant(OUT HANDLE* MutantHandle,
 417                                IN ACCESS_MASK access,
 418                                IN const OBJECT_ATTRIBUTES* attr OPTIONAL,
 419                                IN BOOLEAN InitialOwner)
 420 {
 421     NTSTATUS status;
 422     DWORD len = attr && attr->ObjectName ? attr->ObjectName->Length : 0;
 423     struct security_descriptor *sd = NULL;
 424     struct object_attributes objattr;
 425
 426     if (len >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
 427
 428     objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
 429     objattr.sd_len = 0;
 430     objattr.name_len = len;
 431     if (attr)
 432     {
 433         status = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
 434         if (status != STATUS_SUCCESS) return status;
 435     }
 436
 437     SERVER_START_REQ( create_mutex )
 438     {
 439         req->access  = access;
 440         req->attributes = (attr) ? attr->Attributes : 0;
 441         req->owned   = InitialOwner;
 442         wine_server_add_data( req, &objattr, sizeof(objattr) );
 443         if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
 444         if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
 445         status = wine_server_call( req );
 446         *MutantHandle = wine_server_ptr_handle( reply->handle );
 447     }
 448     SERVER_END_REQ;
 449
 450     NTDLL_free_struct_sd( sd );
 451
 452     return status;
 453 }
 454
 455 /**************************************************************************
 456  *              NtOpenMutant                            [NTDLL.@]
 457  *              ZwOpenMutant                            [NTDLL.@]
 458  */
 459 NTSTATUS WINAPI NtOpenMutant(OUT HANDLE* MutantHandle,
 460                              IN ACCESS_MASK access,
 461                              IN const OBJECT_ATTRIBUTES* attr )
 462 {
 463     NTSTATUS    status;
 464     DWORD       len = attr && attr->ObjectName ? attr->ObjectName->Length : 0;
 465
 466     if (len >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
 467
 468     SERVER_START_REQ( open_mutex )
 469     {
 470         req->access  = access;
 471         req->attributes = (attr) ? attr->Attributes : 0;
 472         req->rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
 473         if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
 474         status = wine_server_call( req );
 475         *MutantHandle = wine_server_ptr_handle( reply->handle );
 476     }
 477     SERVER_END_REQ;
 478     return status;
 479 }
 480
 481 /**************************************************************************
 482  *              NtReleaseMutant                         [NTDLL.@]
 483  *              ZwReleaseMutant                         [NTDLL.@]
 484  */
 485 NTSTATUS WINAPI NtReleaseMutant( IN HANDLE handle, OUT PLONG prev_count OPTIONAL)
 486 {
 487     NTSTATUS    status;
 488
 489     SERVER_START_REQ( release_mutex )
 490     {
 491         req->handle = wine_server_obj_handle( handle );
 492         status = wine_server_call( req );
 493         if (prev_count) *prev_count = reply->prev_count;
 494     }
 495     SERVER_END_REQ;
 496     return status;
 497 }
 498
 499 /******************************************************************
 500  *              NtQueryMutant                   [NTDLL.@]
 501  *              ZwQueryMutant                   [NTDLL.@]
 502  */
 503 NTSTATUS WINAPI NtQueryMutant(IN HANDLE handle,
 504                               IN MUTANT_INFORMATION_CLASS MutantInformationClass,
 505                               OUT PVOID MutantInformation,
 506                               IN ULONG MutantInformationLength,
 507                               OUT PULONG ResultLength OPTIONAL )
 508 {
 509     FIXME("(%p %u %p %u %p): stub!\n",
 510           handle, MutantInformationClass, MutantInformation, MutantInformationLength, ResultLength);
 511     return STATUS_NOT_IMPLEMENTED;
 512 }
 513
 514 /*
 515  *      Jobs
 516  */
 517
 518 /******************************************************************************
 519  *              NtCreateJobObject   [NTDLL.@]
 520  *              ZwCreateJobObject   [NTDLL.@]
 521  */
 522 NTSTATUS WINAPI NtCreateJobObject( PHANDLE handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
 523 {
 524     FIXME( "stub: %p %x %s\n", handle, access, attr ? debugstr_us(attr->ObjectName) : "" );
 525     *handle = (HANDLE)0xdead;
 526     return STATUS_SUCCESS;
 527 }
 528
 529 /******************************************************************************
 530  *              NtOpenJobObject   [NTDLL.@]
 531  *              ZwOpenJobObject   [NTDLL.@]
 532  */
 533 NTSTATUS WINAPI NtOpenJobObject( PHANDLE handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
 534 {
 535     FIXME( "stub: %p %x %s\n", handle, access, attr ? debugstr_us(attr->ObjectName) : "" );
 536     return STATUS_NOT_IMPLEMENTED;
 537 }
 538
 539 /******************************************************************************
 540  *              NtTerminateJobObject   [NTDLL.@]
 541  *              ZwTerminateJobObject   [NTDLL.@]
 542  */
 543 NTSTATUS WINAPI NtTerminateJobObject( HANDLE handle, NTSTATUS status )
 544 {
 545     FIXME( "stub: %p %x\n", handle, status );
 546     return STATUS_SUCCESS;
 547 }
 548
 549 /******************************************************************************
 550  *              NtQueryInformationJobObject   [NTDLL.@]
 551  *              ZwQueryInformationJobObject   [NTDLL.@]
 552  */
 553 NTSTATUS WINAPI NtQueryInformationJobObject( HANDLE handle, JOBOBJECTINFOCLASS class, PVOID info,
 554                                              ULONG len, PULONG ret_len )
 555 {
 556     FIXME( "stub: %p %u %p %u %p\n", handle, class, info, len, ret_len );
 557     return STATUS_NOT_IMPLEMENTED;
 558 }
 559
 560 /******************************************************************************
 561  *              NtSetInformationJobObject   [NTDLL.@]
 562  *              ZwSetInformationJobObject   [NTDLL.@]
 563  */
 564 NTSTATUS WINAPI NtSetInformationJobObject( HANDLE handle, JOBOBJECTINFOCLASS class, PVOID info, ULONG len )
 565 {
 566     FIXME( "stub: %p %u %p %u\n", handle, class, info, len );
 567     return STATUS_SUCCESS;
 568 }
 569
 570 /******************************************************************************
 571  *              NtIsProcessInJob   [NTDLL.@]
 572  *              ZwIsProcessInJob   [NTDLL.@]
 573  */
 574 NTSTATUS WINAPI NtIsProcessInJob( HANDLE process, HANDLE job )
 575 {
 576     FIXME( "stub: %p %p\n", process, job );
 577     return STATUS_PROCESS_NOT_IN_JOB;
 578 }
 579
 580 /******************************************************************************
 581  *              NtAssignProcessToJobObject   [NTDLL.@]
 582  *              ZwAssignProcessToJobObject   [NTDLL.@]
 583  */
 584 NTSTATUS WINAPI NtAssignProcessToJobObject( HANDLE job, HANDLE process )
 585 {
 586     FIXME( "stub: %p %p\n", job, process );
 587     return STATUS_SUCCESS;
 588 }
 589
 590 /*
 591  *      Timers
 592  */
 593
 594 /**************************************************************************
 595  *              NtCreateTimer                           [NTDLL.@]
 596  *              ZwCreateTimer                           [NTDLL.@]
 597  */
 598 NTSTATUS WINAPI NtCreateTimer(OUT HANDLE *handle,
 599                               IN ACCESS_MASK access,
 600                               IN const OBJECT_ATTRIBUTES *attr OPTIONAL,
 601                               IN TIMER_TYPE timer_type)
 602 {
 603     DWORD       len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
 604     NTSTATUS    status;
 605
 606     if (len >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
 607
 608     if (timer_type != NotificationTimer && timer_type != SynchronizationTimer)
 609         return STATUS_INVALID_PARAMETER;
 610
 611     SERVER_START_REQ( create_timer )
 612     {
 613         req->access  = access;
 614         req->attributes = (attr) ? attr->Attributes : 0;
 615         req->rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
 616         req->manual  = (timer_type == NotificationTimer) ? TRUE : FALSE;
 617         if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
 618         status = wine_server_call( req );
 619         *handle = wine_server_ptr_handle( reply->handle );
 620     }
 621     SERVER_END_REQ;
 622     return status;
 623
 624 }
 625
 626 /**************************************************************************
 627  *              NtOpenTimer                             [NTDLL.@]
 628  *              ZwOpenTimer                             [NTDLL.@]
 629  */
 630 NTSTATUS WINAPI NtOpenTimer(OUT PHANDLE handle,
 631                             IN ACCESS_MASK access,
 632                             IN const OBJECT_ATTRIBUTES* attr )
 633 {
 634     DWORD       len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
 635     NTSTATUS    status;
 636
 637     if (len >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
 638
 639     SERVER_START_REQ( open_timer )
 640     {
 641         req->access  = access;
 642         req->attributes = (attr) ? attr->Attributes : 0;
 643         req->rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
 644         if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
 645         status = wine_server_call( req );
 646         *handle = wine_server_ptr_handle( reply->handle );
 647     }
 648     SERVER_END_REQ;
 649     return status;
 650 }
 651
 652 /**************************************************************************
 653  *              NtSetTimer                              [NTDLL.@]
 654  *              ZwSetTimer                              [NTDLL.@]
 655  */
 656 NTSTATUS WINAPI NtSetTimer(IN HANDLE handle,
 657                            IN const LARGE_INTEGER* when,
 658                            IN PTIMER_APC_ROUTINE callback,
 659                            IN PVOID callback_arg,
 660                            IN BOOLEAN resume,
 661                            IN ULONG period OPTIONAL,
 662                            OUT PBOOLEAN state OPTIONAL)
 663 {
 664     NTSTATUS    status = STATUS_SUCCESS;
 665
 666     TRACE("(%p,%p,%p,%p,%08x,0x%08x,%p) stub\n",
 667           handle, when, callback, callback_arg, resume, period, state);
 668
 669     SERVER_START_REQ( set_timer )
 670     {
 671         req->handle   = wine_server_obj_handle( handle );
 672         req->period   = period;
 673         req->expire   = when->QuadPart;
 674         req->callback = callback;
 675         req->arg      = callback_arg;
 676         status = wine_server_call( req );
 677         if (state) *state = reply->signaled;
 678     }
 679     SERVER_END_REQ;
 680
 681     /* set error but can still succeed */
 682     if (resume && status == STATUS_SUCCESS) return STATUS_TIMER_RESUME_IGNORED;
 683     return status;
 684 }
 685
 686 /**************************************************************************
 687  *              NtCancelTimer                           [NTDLL.@]
 688  *              ZwCancelTimer                           [NTDLL.@]
 689  */
 690 NTSTATUS WINAPI NtCancelTimer(IN HANDLE handle, OUT BOOLEAN* state)
 691 {
 692     NTSTATUS    status;
 693
 694     SERVER_START_REQ( cancel_timer )
 695     {
 696         req->handle = wine_server_obj_handle( handle );
 697         status = wine_server_call( req );
 698         if (state) *state = reply->signaled;
 699     }
 700     SERVER_END_REQ;
 701     return status;
 702 }
 703
 704 /******************************************************************************
 705  *  NtQueryTimer (NTDLL.@)
 706  *
 707  * Retrieves information about a timer.
 708  *
 709  * PARAMS
 710  *  TimerHandle           [I] The timer to retrieve information about.
 711  *  TimerInformationClass [I] The type of information to retrieve.
 712  *  TimerInformation      [O] Pointer to buffer to store information in.
 713  *  Length                [I] The length of the buffer pointed to by TimerInformation.
 714  *  ReturnLength          [O] Optional. The size of buffer actually used.
 715  *
 716  * RETURNS
 717  *  Success: STATUS_SUCCESS
 718  *  Failure: STATUS_INFO_LENGTH_MISMATCH, if Length doesn't match the required data
 719  *           size for the class specified.
 720  *           STATUS_INVALID_INFO_CLASS, if an invalid TimerInformationClass was specified.
 721  *           STATUS_ACCESS_DENIED, if TimerHandle does not have TIMER_QUERY_STATE access
 722  *           to the timer.
 723  */
 724 NTSTATUS WINAPI NtQueryTimer(
 725     HANDLE TimerHandle,
 726     TIMER_INFORMATION_CLASS TimerInformationClass,
 727     PVOID TimerInformation,
 728     ULONG Length,
 729     PULONG ReturnLength)
 730 {
 731     TIMER_BASIC_INFORMATION * basic_info = (TIMER_BASIC_INFORMATION *)TimerInformation;
 732     NTSTATUS status;
 733     LARGE_INTEGER now;
 734
 735     TRACE("(%p,%d,%p,0x%08x,%p)\n", TimerHandle, TimerInformationClass,
 736        TimerInformation, Length, ReturnLength);
 737
 738     switch (TimerInformationClass)
 739     {
 740     case TimerBasicInformation:
 741         if (Length < sizeof(TIMER_BASIC_INFORMATION))
 742             return STATUS_INFO_LENGTH_MISMATCH;
 743
 744         SERVER_START_REQ(get_timer_info)
 745         {
 746             req->handle = wine_server_obj_handle( TimerHandle );
 747             status = wine_server_call(req);
 748
 749             /* convert server time to absolute NTDLL time */
 750             basic_info->RemainingTime.QuadPart = reply->when;
 751             basic_info->TimerState = reply->signaled;
 752         }
 753         SERVER_END_REQ;
 754
 755         /* convert from absolute into relative time */
 756         NtQuerySystemTime(&now);
 757         if (now.QuadPart > basic_info->RemainingTime.QuadPart)
 758             basic_info->RemainingTime.QuadPart = 0;
 759         else
 760             basic_info->RemainingTime.QuadPart -= now.QuadPart;
 761
 762         if (ReturnLength) *ReturnLength = sizeof(TIMER_BASIC_INFORMATION);
 763
 764         return status;
 765     }
 766
 767     FIXME("Unhandled class %d\n", TimerInformationClass);
 768     return STATUS_INVALID_INFO_CLASS;
 769 }
 770
 771
 772 /******************************************************************************
 773  * NtQueryTimerResolution [NTDLL.@]
 774  */
 775 NTSTATUS WINAPI NtQueryTimerResolution(OUT ULONG* min_resolution,
 776                                        OUT ULONG* max_resolution,
 777                                        OUT ULONG* current_resolution)
 778 {
 779     FIXME("(%p,%p,%p), stub!\n",
 780           min_resolution, max_resolution, current_resolution);
 781
 782     return STATUS_NOT_IMPLEMENTED;
 783 }
 784
 785 /******************************************************************************
 786  * NtSetTimerResolution [NTDLL.@]
 787  */
 788 NTSTATUS WINAPI NtSetTimerResolution(IN ULONG resolution,
 789                                      IN BOOLEAN set_resolution,
 790                                      OUT ULONG* current_resolution )
 791 {
 792     FIXME("(%u,%u,%p), stub!\n",
 793           resolution, set_resolution, current_resolution);
 794
 795     return STATUS_NOT_IMPLEMENTED;
 796 }
 797
 798
 799 /***********************************************************************
 800  *              wait_reply
 801  *
 802  * Wait for a reply on the waiting pipe of the current thread.
 803  */
 804 static int wait_reply( void *cookie )
 805 {
 806     int signaled;
 807     struct wake_up_reply reply;
 808     for (;;)
 809     {
 810         int ret;
 811         ret = read( ntdll_get_thread_data()->wait_fd[0], &reply, sizeof(reply) );
 812         if (ret == sizeof(reply))
 813         {
 814             if (!reply.cookie) break;  /* thread got killed */
 815             if (reply.cookie == cookie) return reply.signaled;
 816             /* we stole another reply, wait for the real one */
 817             signaled = wait_reply( cookie );
 818             /* and now put the wrong one back in the pipe */
 819             for (;;)
 820             {
 821                 ret = write( ntdll_get_thread_data()->wait_fd[1], &reply, sizeof(reply) );
 822                 if (ret == sizeof(reply)) break;
 823                 if (ret >= 0) server_protocol_error( "partial wakeup write %d\n", ret );
 824                 if (errno == EINTR) continue;
 825                 server_protocol_perror("wakeup write");
 826             }
 827             return signaled;
 828         }
 829         if (ret >= 0) server_protocol_error( "partial wakeup read %d\n", ret );
 830         if (errno == EINTR) continue;
 831         server_protocol_perror("wakeup read");
 832     }
 833     /* the server closed the connection; time to die... */
 834     server_abort_thread(0);
 835 }
 836
 837
 838 /***********************************************************************
 839  *              invoke_apc
 840  *
 841  * Invoke a single APC. Return TRUE if a user APC has been run.
 842  */
 843 static BOOL invoke_apc( const apc_call_t *call, apc_result_t *result )
 844 {
 845     BOOL user_apc = FALSE;
 846
 847     memset( result, 0, sizeof(*result) );
 848
 849     switch (call->type)
 850     {
 851     case APC_NONE:
 852         break;
 853     case APC_USER:
 854         call->user.func( call->user.args[0], call->user.args[1], call->user.args[2] );
 855         user_apc = TRUE;
 856         break;
 857     case APC_TIMER:
 858         call->timer.func( call->timer.arg, (DWORD)call->timer.time, (DWORD)(call->timer.time >> 32) );
 859         user_apc = TRUE;
 860         break;
 861     case APC_ASYNC_IO:
 862         result->type = call->type;
 863         result->async_io.status = call->async_io.func( call->async_io.user,
 864                                                        call->async_io.sb,
 865                                                        call->async_io.status,
 866                                                        &result->async_io.total );
 867         break;
 868     case APC_VIRTUAL_ALLOC:
 869         result->type = call->type;
 870         result->virtual_alloc.addr = call->virtual_alloc.addr;
 871         result->virtual_alloc.size = call->virtual_alloc.size;
 872         result->virtual_alloc.status = NtAllocateVirtualMemory( NtCurrentProcess(),
 873                                                                 &result->virtual_alloc.addr,
 874                                                                 call->virtual_alloc.zero_bits,
 875                                                                 &result->virtual_alloc.size,
 876                                                                 call->virtual_alloc.op_type,
 877                                                                 call->virtual_alloc.prot );
 878         break;
 879     case APC_VIRTUAL_FREE:
 880         result->type = call->type;
 881         result->virtual_free.addr = call->virtual_free.addr;
 882         result->virtual_free.size = call->virtual_free.size;
 883         result->virtual_free.status = NtFreeVirtualMemory( NtCurrentProcess(),
 884                                                            &result->virtual_free.addr,
 885                                                            &result->virtual_free.size,
 886                                                            call->virtual_free.op_type );
 887         break;
 888     case APC_VIRTUAL_QUERY:
 889     {
 890         MEMORY_BASIC_INFORMATION info;
 891         result->type = call->type;
 892         result->virtual_query.status = NtQueryVirtualMemory( NtCurrentProcess(),
 893                                                              call->virtual_query.addr,
 894                                                              MemoryBasicInformation, &info,
 895                                                              sizeof(info), NULL );
 896         if (result->virtual_query.status == STATUS_SUCCESS)
 897         {
 898             result->virtual_query.base       = info.BaseAddress;
 899             result->virtual_query.alloc_base = info.AllocationBase;
 900             result->virtual_query.size       = info.RegionSize;
 901             result->virtual_query.state      = info.State;
 902             result->virtual_query.prot       = info.Protect;
 903             result->virtual_query.alloc_prot = info.AllocationProtect;
 904             result->virtual_query.alloc_type = info.Type;
 905         }
 906         break;
 907     }
 908     case APC_VIRTUAL_PROTECT:
 909         result->type = call->type;
 910         result->virtual_protect.addr = call->virtual_protect.addr;
 911         result->virtual_protect.size = call->virtual_protect.size;
 912         result->virtual_protect.status = NtProtectVirtualMemory( NtCurrentProcess(),
 913                                                                  &result->virtual_protect.addr,
 914                                                                  &result->virtual_protect.size,
 915                                                                  call->virtual_protect.prot,
 916                                                                  &result->virtual_protect.prot );
 917         break;
 918     case APC_VIRTUAL_FLUSH:
 919         result->type = call->type;
 920         result->virtual_flush.addr = call->virtual_flush.addr;
 921         result->virtual_flush.size = call->virtual_flush.size;
 922         result->virtual_flush.status = NtFlushVirtualMemory( NtCurrentProcess(),
 923                                                              &result->virtual_flush.addr,
 924                                                              &result->virtual_flush.size, 0 );
 925         break;
 926     case APC_VIRTUAL_LOCK:
 927         result->type = call->type;
 928         result->virtual_lock.addr = call->virtual_lock.addr;
 929         result->virtual_lock.size = call->virtual_lock.size;
 930         result->virtual_lock.status = NtLockVirtualMemory( NtCurrentProcess(),
 931                                                            &result->virtual_lock.addr,
 932                                                            &result->virtual_lock.size, 0 );
 933         break;
 934     case APC_VIRTUAL_UNLOCK:
 935         result->type = call->type;
 936         result->virtual_unlock.addr = call->virtual_unlock.addr;
 937         result->virtual_unlock.size = call->virtual_unlock.size;
 938         result->virtual_unlock.status = NtUnlockVirtualMemory( NtCurrentProcess(),
 939                                                                &result->virtual_unlock.addr,
 940                                                                &result->virtual_unlock.size, 0 );
 941         break;
 942     case APC_MAP_VIEW:
 943     {
 944         LARGE_INTEGER offset;
 945         result->type = call->type;
 946         result->map_view.addr   = call->map_view.addr;
 947         result->map_view.size   = call->map_view.size;
 948         offset.QuadPart         = call->map_view.offset;
 949         result->map_view.status = NtMapViewOfSection( wine_server_ptr_handle(call->map_view.handle),
 950                                                       NtCurrentProcess(), &result->map_view.addr,
 951                                                       call->map_view.zero_bits, 0, &offset,
 952                                                       &result->map_view.size, ViewShare,
 953                                                       call->map_view.alloc_type, call->map_view.prot );
 954         NtClose( wine_server_ptr_handle(call->map_view.handle) );
 955         break;
 956     }
 957     case APC_UNMAP_VIEW:
 958         result->type = call->type;
 959         result->unmap_view.status = NtUnmapViewOfSection( NtCurrentProcess(), call->unmap_view.addr );
 960         break;
 961     case APC_CREATE_THREAD:
 962     {
 963         CLIENT_ID id;
 964         HANDLE handle;
 965         result->type = call->type;
 966         result->create_thread.status = RtlCreateUserThread( NtCurrentProcess(), NULL,
 967                                                             call->create_thread.suspend, NULL,
 968                                                             call->create_thread.reserve,
 969                                                             call->create_thread.commit,
 970                                                             call->create_thread.func,
 971                                                             call->create_thread.arg,
 972                                                             &handle, &id );
 973         result->create_thread.handle = wine_server_obj_handle( handle );
 974         result->create_thread.tid = HandleToULong(id.UniqueThread);
 975         break;
 976     }
 977     default:
 978         server_protocol_error( "get_apc_request: bad type %d\n", call->type );
 979         break;
 980     }
 981     return user_apc;
 982 }
 983
 984 /***********************************************************************
 985  *           NTDLL_queue_process_apc
 986  */
 987 NTSTATUS NTDLL_queue_process_apc( HANDLE process, const apc_call_t *call, apc_result_t *result )
 988 {
 989     for (;;)
 990     {
 991         NTSTATUS ret;
 992         HANDLE handle = 0;
 993         BOOL self = FALSE;
 994
 995         SERVER_START_REQ( queue_apc )
 996         {
 997             req->process = wine_server_obj_handle( process );
 998             req->call = *call;
 999             if (!(ret = wine_server_call( req )))
1000             {
1001                 handle = wine_server_ptr_handle( reply->handle );
1002                 self = reply->self;
1003             }
1004         }
1005         SERVER_END_REQ;
1006         if (ret != STATUS_SUCCESS) return ret;
1007
1008         if (self)
1009         {
1010             invoke_apc( call, result );
1011         }
1012         else
1013         {
1014             NtWaitForSingleObject( handle, FALSE, NULL );
1015
1016             SERVER_START_REQ( get_apc_result )
1017             {
1018                 req->handle = wine_server_obj_handle( handle );
1019                 if (!(ret = wine_server_call( req ))) *result = reply->result;
1020             }
1021             SERVER_END_REQ;
1022
1023             if (!ret && result->type == APC_NONE) continue;  /* APC didn't run, try again */
1024             if (ret) NtClose( handle );
1025         }
1026         return ret;
1027     }
1028 }
1029
1030
1031 /***********************************************************************
1032  *              NTDLL_wait_for_multiple_objects
1033  *
1034  * Implementation of NtWaitForMultipleObjects
1035  */
1036 NTSTATUS NTDLL_wait_for_multiple_objects( UINT count, const HANDLE *handles, UINT flags,
1037                                           const LARGE_INTEGER *timeout, HANDLE signal_object )
1038 {
1039     NTSTATUS ret;
1040     int i, cookie;
1041     BOOL user_apc = FALSE;
1042     obj_handle_t obj_handles[MAXIMUM_WAIT_OBJECTS];
1043     obj_handle_t apc_handle = 0;
1044     apc_call_t call;
1045     apc_result_t result;
1046     timeout_t abs_timeout = timeout ? timeout->QuadPart : TIMEOUT_INFINITE;
1047
1048     memset( &result, 0, sizeof(result) );
1049     for (i = 0; i < count; i++) obj_handles[i] = wine_server_obj_handle( handles[i] );
1050
1051     for (;;)
1052     {
1053         SERVER_START_REQ( select )
1054         {
1055             req->flags    = flags;
1056             req->cookie   = &cookie;
1057             req->signal   = wine_server_obj_handle( signal_object );
1058             req->prev_apc = apc_handle;
1059             req->timeout  = abs_timeout;
1060             wine_server_add_data( req, &result, sizeof(result) );
1061             wine_server_add_data( req, obj_handles, count * sizeof(*obj_handles) );
1062             ret = wine_server_call( req );
1063             abs_timeout = reply->timeout;
1064             apc_handle  = reply->apc_handle;
1065             call        = reply->call;
1066         }
1067         SERVER_END_REQ;
1068         if (ret == STATUS_PENDING) ret = wait_reply( &cookie );
1069         if (ret != STATUS_USER_APC) break;
1070         if (invoke_apc( &call, &result ))
1071         {
1072             /* if we ran a user apc we have to check once more if an object got signaled,
1073              * but we don't want to wait */
1074             abs_timeout = 0;
1075             user_apc = TRUE;
1076         }
1077         signal_object = 0;  /* don't signal it multiple times */
1078     }
1079
1080     if (ret == STATUS_TIMEOUT && user_apc) ret = STATUS_USER_APC;
1081
1082     /* A test on Windows 2000 shows that Windows always yields during
1083        a wait, but a wait that is hit by an event gets a priority
1084        boost as well.  This seems to model that behavior the closest.  */
1085     if (ret == STATUS_TIMEOUT) NtYieldExecution();
1086
1087     return ret;
1088 }
1089
1090
1091 /* wait operations */
1092
1093 /******************************************************************
1094  *              NtWaitForMultipleObjects (NTDLL.@)
1095  */
1096 NTSTATUS WINAPI NtWaitForMultipleObjects( DWORD count, const HANDLE *handles,
1097                                           BOOLEAN wait_all, BOOLEAN alertable,
1098                                           const LARGE_INTEGER *timeout )
1099 {
1100     UINT flags = SELECT_INTERRUPTIBLE;
1101
1102     if (!count || count > MAXIMUM_WAIT_OBJECTS) return STATUS_INVALID_PARAMETER_1;
1103
1104     if (wait_all) flags |= SELECT_ALL;
1105     if (alertable) flags |= SELECT_ALERTABLE;
1106     return NTDLL_wait_for_multiple_objects( count, handles, flags, timeout, 0 );
1107 }
1108
1109
1110 /******************************************************************
1111  *              NtWaitForSingleObject (NTDLL.@)
1112  */
1113 NTSTATUS WINAPI NtWaitForSingleObject(HANDLE handle, BOOLEAN alertable, const LARGE_INTEGER *timeout )
1114 {
1115     return NtWaitForMultipleObjects( 1, &handle, FALSE, alertable, timeout );
1116 }
1117
1118
1119 /******************************************************************
1120  *              NtSignalAndWaitForSingleObject (NTDLL.@)
1121  */
1122 NTSTATUS WINAPI NtSignalAndWaitForSingleObject( HANDLE hSignalObject, HANDLE hWaitObject,
1123                                                 BOOLEAN alertable, const LARGE_INTEGER *timeout )
1124 {
1125     UINT flags = SELECT_INTERRUPTIBLE;
1126
1127     if (!hSignalObject) return STATUS_INVALID_HANDLE;
1128     if (alertable) flags |= SELECT_ALERTABLE;
1129     return NTDLL_wait_for_multiple_objects( 1, &hWaitObject, flags, timeout, hSignalObject );
1130 }
1131
1132
1133 /******************************************************************
1134  *              NtYieldExecution (NTDLL.@)
1135  */
1136 NTSTATUS WINAPI NtYieldExecution(void)
1137 {
1138 #ifdef HAVE_SCHED_YIELD
1139     sched_yield();
1140     return STATUS_SUCCESS;
1141 #else
1142     return STATUS_NO_YIELD_PERFORMED;
1143 #endif
1144 }
1145
1146
1147 /******************************************************************
1148  *              NtDelayExecution (NTDLL.@)
1149  */
1150 NTSTATUS WINAPI NtDelayExecution( BOOLEAN alertable, const LARGE_INTEGER *timeout )
1151 {
1152     /* if alertable, we need to query the server */
1153     if (alertable)
1154         return NTDLL_wait_for_multiple_objects( 0, NULL, SELECT_INTERRUPTIBLE | SELECT_ALERTABLE,
1155                                                 timeout, 0 );
1156
1157     if (!timeout || timeout->QuadPart == TIMEOUT_INFINITE)  /* sleep forever */
1158     {
1159         for (;;) select( 0, NULL, NULL, NULL, NULL );
1160     }
1161     else
1162     {
1163         LARGE_INTEGER now;
1164         timeout_t when, diff;
1165
1166         if ((when = timeout->QuadPart) < 0)
1167         {
1168             NtQuerySystemTime( &now );
1169             when = now.QuadPart - when;
1170         }
1171
1172         /* Note that we yield after establishing the desired timeout */
1173         NtYieldExecution();
1174         if (!when) return STATUS_SUCCESS;
1175
1176         for (;;)
1177         {
1178             struct timeval tv;
1179             NtQuerySystemTime( &now );
1180             diff = (when - now.QuadPart + 9) / 10;
1181             if (diff <= 0) break;
1182             tv.tv_sec  = diff / 1000000;
1183             tv.tv_usec = diff % 1000000;
1184             if (select( 0, NULL, NULL, NULL, &tv ) != -1) break;
1185         }
1186     }
1187     return STATUS_SUCCESS;
1188 }
1189
1190 /******************************************************************
1191  *              NtCreateIoCompletion (NTDLL.@)
1192  *              ZwCreateIoCompletion (NTDLL.@)
1193  *
1194  * Creates I/O completion object.
1195  *
1196  * PARAMS
1197  *      CompletionPort            [O] created completion object handle will be placed there
1198  *      DesiredAccess             [I] desired access to a handle (combination of IO_COMPLETION_*)
1199  *      ObjectAttributes          [I] completion object attributes
1200  *      NumberOfConcurrentThreads [I] desired number of concurrent active worker threads
1201  *
1202  */
1203 NTSTATUS WINAPI NtCreateIoCompletion( PHANDLE CompletionPort, ACCESS_MASK DesiredAccess,
1204                                       POBJECT_ATTRIBUTES ObjectAttributes, ULONG NumberOfConcurrentThreads )
1205 {
1206     NTSTATUS status;
1207
1208     TRACE("(%p, %x, %p, %d)\n", CompletionPort, DesiredAccess,
1209           ObjectAttributes, NumberOfConcurrentThreads);
1210
1211     if (!CompletionPort)
1212         return STATUS_INVALID_PARAMETER;
1213
1214     SERVER_START_REQ( create_completion )
1215     {
1216         req->access     = DesiredAccess;
1217         req->attributes = ObjectAttributes ? ObjectAttributes->Attributes : 0;
1218         req->rootdir    = wine_server_obj_handle( ObjectAttributes ? ObjectAttributes->RootDirectory : 0 );
1219         req->concurrent = NumberOfConcurrentThreads;
1220         if (ObjectAttributes && ObjectAttributes->ObjectName)
1221             wine_server_add_data( req, ObjectAttributes->ObjectName->Buffer,
1222                                        ObjectAttributes->ObjectName->Length );
1223         if (!(status = wine_server_call( req )))
1224             *CompletionPort = wine_server_ptr_handle( reply->handle );
1225     }
1226     SERVER_END_REQ;
1227     return status;
1228 }
1229
1230 /******************************************************************
1231  *              NtSetIoCompletion (NTDLL.@)
1232  *              ZwSetIoCompletion (NTDLL.@)
1233  *
1234  * Inserts completion message into queue
1235  *
1236  * PARAMS
1237  *      CompletionPort           [I] HANDLE to completion object
1238  *      CompletionKey            [I] completion key
1239  *      CompletionValue          [I] completion value (usually pointer to OVERLAPPED)
1240  *      Status                   [I] operation status
1241  *      NumberOfBytesTransferred [I] number of bytes transferred
1242  */
1243 NTSTATUS WINAPI NtSetIoCompletion( HANDLE CompletionPort, ULONG_PTR CompletionKey,
1244                                    ULONG_PTR CompletionValue, NTSTATUS Status,
1245                                    ULONG NumberOfBytesTransferred )
1246 {
1247     NTSTATUS status;
1248
1249     TRACE("(%p, %lx, %lx, %x, %d)\n", CompletionPort, CompletionKey,
1250           CompletionValue, Status, NumberOfBytesTransferred);
1251
1252     SERVER_START_REQ( add_completion )
1253     {
1254         req->handle      = wine_server_obj_handle( CompletionPort );
1255         req->ckey        = CompletionKey;
1256         req->cvalue      = CompletionValue;
1257         req->status      = Status;
1258         req->information = NumberOfBytesTransferred;
1259         status = wine_server_call( req );
1260     }
1261     SERVER_END_REQ;
1262     return status;
1263 }
1264
1265 /******************************************************************
1266  *              NtRemoveIoCompletion (NTDLL.@)
1267  *              ZwRemoveIoCompletion (NTDLL.@)
1268  *
1269  * (Wait for and) retrieve first completion message from completion object's queue
1270  *
1271  * PARAMS
1272  *      CompletionPort  [I] HANDLE to I/O completion object
1273  *      CompletionKey   [O] completion key
1274  *      CompletionValue [O] Completion value given in NtSetIoCompletion or in async operation
1275  *      iosb            [O] IO_STATUS_BLOCK of completed asynchronous operation
1276  *      WaitTime        [I] optional wait time in NTDLL format
1277  *
1278  */
1279 NTSTATUS WINAPI NtRemoveIoCompletion( HANDLE CompletionPort, PULONG_PTR CompletionKey,
1280                                       PULONG_PTR CompletionValue, PIO_STATUS_BLOCK iosb,
1281                                       PLARGE_INTEGER WaitTime )
1282 {
1283     NTSTATUS status;
1284
1285     TRACE("(%p, %p, %p, %p, %p)\n", CompletionPort, CompletionKey,
1286           CompletionValue, iosb, WaitTime);
1287
1288     for(;;)
1289     {
1290         SERVER_START_REQ( remove_completion )
1291         {
1292             req->handle = wine_server_obj_handle( CompletionPort );
1293             if (!(status = wine_server_call( req )))
1294             {
1295                 *CompletionKey    = reply->ckey;
1296                 *CompletionValue  = reply->cvalue;
1297                 iosb->Information = reply->information;
1298                 iosb->u.Status    = reply->status;
1299             }
1300         }
1301         SERVER_END_REQ;
1302         if (status != STATUS_PENDING) break;
1303
1304         status = NtWaitForSingleObject( CompletionPort, FALSE, WaitTime );
1305         if (status != WAIT_OBJECT_0) break;
1306     }
1307     return status;
1308 }
1309
1310 /******************************************************************
1311  *              NtOpenIoCompletion (NTDLL.@)
1312  *              ZwOpenIoCompletion (NTDLL.@)
1313  *
1314  * Opens I/O completion object
1315  *
1316  * PARAMS
1317  *      CompletionPort     [O] completion object handle will be placed there
1318  *      DesiredAccess      [I] desired access to a handle (combination of IO_COMPLETION_*)
1319  *      ObjectAttributes   [I] completion object name
1320  *
1321  */
1322 NTSTATUS WINAPI NtOpenIoCompletion( PHANDLE CompletionPort, ACCESS_MASK DesiredAccess,
1323                                     POBJECT_ATTRIBUTES ObjectAttributes )
1324 {
1325     NTSTATUS status;
1326
1327     TRACE("(%p, 0x%x, %p)\n", CompletionPort, DesiredAccess, ObjectAttributes);
1328
1329     if (!CompletionPort || !ObjectAttributes || !ObjectAttributes->ObjectName)
1330         return STATUS_INVALID_PARAMETER;
1331
1332     SERVER_START_REQ( open_completion )
1333     {
1334         req->access     = DesiredAccess;
1335         req->rootdir    = wine_server_obj_handle( ObjectAttributes->RootDirectory );
1336         wine_server_add_data( req, ObjectAttributes->ObjectName->Buffer,
1337                                    ObjectAttributes->ObjectName->Length );
1338         if (!(status = wine_server_call( req )))
1339             *CompletionPort = wine_server_ptr_handle( reply->handle );
1340     }
1341     SERVER_END_REQ;
1342     return status;
1343 }
1344
1345 /******************************************************************
1346  *              NtQueryIoCompletion (NTDLL.@)
1347  *              ZwQueryIoCompletion (NTDLL.@)
1348  *
1349  * Requests information about given I/O completion object
1350  *
1351  * PARAMS
1352  *      CompletionPort        [I] HANDLE to completion port to request
1353  *      InformationClass      [I] information class
1354  *      CompletionInformation [O] user-provided buffer for data
1355  *      BufferLength          [I] buffer length
1356  *      RequiredLength        [O] required buffer length
1357  *
1358  */
1359 NTSTATUS WINAPI NtQueryIoCompletion( HANDLE CompletionPort, IO_COMPLETION_INFORMATION_CLASS InformationClass,
1360                                      PVOID CompletionInformation, ULONG BufferLength, PULONG RequiredLength )
1361 {
1362     NTSTATUS status;
1363
1364     TRACE("(%p, %d, %p, 0x%x, %p)\n", CompletionPort, InformationClass, CompletionInformation,
1365           BufferLength, RequiredLength);
1366
1367     if (!CompletionInformation) return STATUS_INVALID_PARAMETER;
1368     switch( InformationClass )
1369     {
1370         case IoCompletionBasicInformation:
1371             {
1372                 ULONG *info = (ULONG *)CompletionInformation;
1373
1374                 if (RequiredLength) *RequiredLength = sizeof(*info);
1375                 if (BufferLength != sizeof(*info))
1376                     status = STATUS_INFO_LENGTH_MISMATCH;
1377                 else
1378                 {
1379                     SERVER_START_REQ( query_completion )
1380                     {
1381                         req->handle = wine_server_obj_handle( CompletionPort );
1382                         if (!(status = wine_server_call( req )))
1383                             *info = reply->depth;
1384                     }
1385                     SERVER_END_REQ;
1386                 }
1387             }
1388             break;
1389         default:
1390             status = STATUS_INVALID_PARAMETER;
1391             break;
1392     }
1393     return status;
1394 }
1395
1396 NTSTATUS NTDLL_AddCompletion( HANDLE hFile, ULONG_PTR CompletionValue, NTSTATUS CompletionStatus, ULONG_PTR Information )
1397 {
1398     NTSTATUS status;
1399
1400     SERVER_START_REQ( add_fd_completion )
1401     {
1402         req->handle      = wine_server_obj_handle( hFile );
1403         req->cvalue      = CompletionValue;
1404         req->status      = CompletionStatus;
1405         req->information = Information;
1406         status = wine_server_call( req );
1407     }
1408     SERVER_END_REQ;
1409     return status;
1410 }